Characteristics and development of acetic acid fabric
Characteristics and development of acetic acid fabric
Triacetate fiber is made from triacetate cellulose obtained by complete acetylation of cellulose (esterification degree 270-300, insoluble in acetone) as raw material, and is produced by spinning.
Its performance is similar to type II acetate fiber, but its strength is reduced by up to 30% in the wet state, and its heat resistance is better. After heat treatment, it can not deform at 240-250°C, and its moisture regain is only 3.2%, but its wear resistance Poor.
Triacetate fiber filaments are generally produced by dry spinning. The solvent is composed of methylene chloride and a small amount of ethanol. The concentration of the spinning solution is 20% to 22%. The triacetate cellulose solution obtained by homogeneous acetylation can also be used. The spinning liquid and spinning temperature are slightly lower. Short fibers are also produced by wet spinning.
The main component of acetate fabric is acetate fiber. Acetate fiber is made from cellulose (a natural substance extracted from wood pulp cellulose, which has the same chemical molecule as cotton fiber) and acetate anhydride as raw materials, and is made through a series of chemical processes. Acetate filament fiber that can be used for spinning and weaving. It uses cellulose as the basic skeleton and has the basic characteristics of cellulose fiber; but its properties are different from regenerated cellulose fiber (viscose, cupro). Some properties of synthetic fibers.
The amazing properties of acetate:
1. Good thermoplasticity: acetate fiber softens at 200℃~230℃ and melts at 260℃. This feature makes acetate fiber thermoplastic similar to synthetic fiber. After plastic deformation, the shape will not recover and the deformation is permanent.
2. Excellent dyeability: Acetate fiber can usually be dyed with disperse dyes, and has good coloring performance and bright colors. Its coloring performance is better than other cellulose fibers.
3. Appearance similar to mulberry silk: The appearance and luster of acetate fiber are similar to mulberry silk. The soft and smooth feel is also similar to mulberry silk. Its specific gravity is the same as mulberry silk, so the drape is the same as mulberry silk. Fabrics woven from acetate silk are easy to wash and dry. Acetate fabrics are mildew-free and have better elasticity than viscose fibers.
4. The performance is close to that of mulberry silk: compared with the physical and mechanical properties of viscose fiber and mulberry silk, the strength of acetate fiber is lower, the elongation at break is larger, and the ratio of wet strength to dry strength is lower, but higher than that of viscose silk , the initial modulus is small, and the moisture regain is lower than viscose fiber and mulberry silk, but higher than synthetic fiber. Its wet strength to dry strength ratio, relative hook strength and knotting strength, elastic recovery rate, etc. are similar to those of mulberry silk. big. Therefore, the performance of acetate fiber among chemical fibers is close to that of mulberry silk.
Acetate fabrics have a variety of properties that exceed those of cotton and linen fabrics, such as moisture absorption and breathability, non-stick sweat, easy to wash and dry, mildew-free, comfortable against the skin, and absolutely environmentally friendly.
Acetate fabrics are not charged; they are not easy to absorb dust in the air; they can be dry-cleaned, washed, or machine-washed at temperatures below 40°C. This overcomes the disadvantages of silk and woolen fabrics that are prone to bacteria; they are dusty and can only be dry-cleaned; and woolen fabrics are not susceptible to insects. The shortcomings are that it is easy to take care of and collect, and the acetate fabric has the resilience and smooth feel of woolen fabric.
Development of acetate fabrics: Acetate fiber has good dyeing performance, bright colors, bright appearance, smooth and comfortable properties, but low strength. The development of acetate fabrics needs to “exploit its strengths and avoid weaknesses”. Acetate filament is widely used in clothing, furniture furnishings and decorative fabrics. Acetate filament can be used in clothing linings, shirts, sportswear, bridal gowns, children’s clothing, and T-shirts. Woven or knitted fabrics for clothing linings, skirts, sportswear, bridal gowns, children’s clothing, and T-shirts can be made of 100% acetate filament, or can be blended with acetate filament such as rayon, elastic fiber, Nylon, cotton, or linen, wool, silk polyester, etc. Velvet fabrics, decorative silks, high-end lining silks, embossed silks, fashion fabrics, high-end knitted T-shirt fabrics, etc. Woven furniture furnishing fabrics generally use acetate filament as the warp and cotton yarn or rayon as the weft. Most decorative fabrics are satin, and satin can also be used for ribbons, artificial flowers and ties.
What is the difference between triacetate fabric and diacetate fabric
Type II acetate fiber is made from cellulose diacetate obtained by partial saponification of cellulose triacetate (degree of esterification is 230-250, soluble in acetone) as raw material, and is produced by spinning. Type II acetate fiber has good moisture absorption properties, with a moisture regain rate of 6%. It can be dyed with disperse dyes and has good wearing properties. The filament has an elegant luster, soft hand feel, and good drape, just like real silk. It is suitable for making underwear, bathrobes, children’s clothing, etc.
Women’s clothing and interior decoration fabrics, etc., can also be used as cigarette filters. Short fibers are used for blending with cotton, wool or synthetic fibers, but their strength is reduced by 40% to 50% in the wet state, and the fibers begin to change at 140 to 150°C
shape, bonding occurs at 176°C. The hollow fiber (see chemical fiber) has dialysis function and can be used for medical and chemical purification and separation. Type II acetate fiber filaments are commonly produced by dry spinning. Dissolve cellulose diacetate in an acetone solvent containing a small amount of water to prepare a spinning solution with a concentration of 22% to 30%. After filtering and defoaming, it is sent to spinning. When the thin stream of spinning liquid comes into contact with the hot air flow, the solvent evaporates to form a filament, which is stretched to obtain fiber GXbizWd
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